Short travel detector for empty/load brake control
US6305756A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 4, 2000 |
| Grant date | Oct 23, 2001 |
| Priority date | — |
| Expiry date | Aug 4, 2020 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60T8/1893
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
An empty/load brake control system mountable on a sprung and an unsprung member of a railway car and disposed between the car brake control valve and brake cylinder for adjusting the brake cylinder pressure during a brake application according to the car load condition. Such system includes an empty/load sensor valve device and a sensor arm coupled to a sensor cable whose movement is controlled by a sprung member and a terminal member disposed on an end of sensor cable, in contact with sprung member so that any downward movement of sprung member forces such terminal member in a similar downward direction and similarly pulls on the sensor cable. A piston, under pressure, urges the sensor arm to rotate and retract sensor cable but must overcome resistance of a spring. The system includes a load proportional valve.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.